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Associations between training load, heart rate variability, perceptual fatigue, sleep, and injury in endurance athletes during a 12-week training mesocycle

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dc.contributor.authorSanchez, Raimundo
dc.contributor.authorNieto, Claudio
dc.contributor.authorLeppe, Jaime
dc.contributor.authorGabbett, Tim
dc.contributor.authorBesomi, Manuela
dc.date.accessioned2026-08-03T21:38:49Z
dc.date.available2026-08-03T21:38:49Z
dc.date.issued2025
dc.description.abstractThis study examined associations among training load (external and internal), heart rate variability (HRV), perceptual fatigue, sleep, and injury in endurance athletes during a 12-week training mesocycle. The aims were to (i) compare these parameters between injured and non-injured weeks and (ii) assess differences between high- and low-severity injuries. Fifteen endurance athletes (80% males; median age: 36.5 years; running experience: 5.5 years) participated. Injury severity was measured using the Oslo Sports Trauma Research Centre Questionnaire on Health Problems (OSTRCH). Training load (training stress score [TSS], Session-Rate of Perceived Exertion [sRPE]), HRV, perceptual fatigue (readiness to train and wellbeing), and sleep were collected through daily and weekly assessments over 12 weeks. The weekly injury prevalence over the 12-week period ranged from 7%–40%, with 47% classified as high severity. Injured weeks were characterised by significantly higher sleep-related impairment (p=.004, Hedge’sg=0.704), while all other variables did not significantly differ. Athletes who sustained more severe injuries exhibited lower TSS (p < .001, Hedge’sg=0.84), lower sRPE (p=.029, Hedge’sg=0.705), poorer subjective wellbeing (p=.003, Hedge’sg=0.753), and lower HRV (p=.059, Hedge’sg=0.487) in the week preceding the injury. This exploratory study provides preliminary insights into the potential role of sleep-related impairment, training load fluctuations, and HRV in injury severity among endurance athletes. While findings suggest benefits of integrating these measures into monitoring strategies, the small sample size limits generalisability and should be interpreted with caution.
dc.description.versionVersión publicada
dc.format.extent11 p.
dc.identifier.citationSanchez, R., Nieto, C., Leppe, J., Gabbett, T., & Besomi, M. (2025). Associations between training load, heart rate variability, perceptual fatigue, sleep, and injury in endurance athletes during a 12-week training mesocycle. International Journal of Sports Science & Coaching, 17479541251335613. https://doi.org/10.1177/17479541251335613
dc.identifier.doihttps://doi.org/10.1177/17479541251335613
dc.identifier.urihttps://hdl.handle.net/11447/10947
dc.language.isoen
dc.rightsAtribución-NoComercial-CompartirIgual 3.0 Chile (CC BY-NC-SA 3.0 CL)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/cl/
dc.subjectAthlete monitoring
dc.subjectExternal load
dc.subjectMesocycle
dc.subjectSubjective wellbeing
dc.titleAssociations between training load, heart rate variability, perceptual fatigue, sleep, and injury in endurance athletes during a 12-week training mesocycle
dc.typeArticle
dcterms.accessRightsAcceso abierto
dcterms.sourceInternational Journal of Sports Science & Coaching
dspace.entity.typePublication

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